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Revealing Mechanical Strength of Nanopores Using Atomic Finite Element Techniques

Authors :
Pongprayoon, Prapasiri
Chaimanatsakun, Attaphon
Source :
Materials Science Forum; October 2018, Vol. 934 Issue: 1 p24-29, 6p
Publication Year :
2018

Abstract

Graphene nanopore has been widely employed in nanofilter or nanopore devices due to its outstanding properties. The understanding of its mechanical properties at nanoscale is crucial for device improvement. In this work, the mechanical properties of graphene nanopore is thus investigated using atomistic finite element method (AFEM). Four graphene models with different pore shapes (circular (CR), horizontal rectangle (RH), and vertical rectangle (RV)) in sub-nm size which could be successfully fabricated experimentally have been studied here. The force normal to a pore surface is applied to mimic the impact force due to a fluid flow. Increasing pore size results in the reduction in its strength. Comparing among different pore shapes with comparable sizes, the order of pore strength is CR>RH>RV>SQ. In addition, we observe that the direction of pore alignment and geometries of pore edge also play a key role in mechanical strength of nanopores.

Details

Language :
English
ISSN :
02555476 and 16629752
Volume :
934
Issue :
1
Database :
Supplemental Index
Journal :
Materials Science Forum
Publication Type :
Periodical
Accession number :
ejs47801628
Full Text :
https://doi.org/10.4028/www.scientific.net/MSF.934.24